油樟叶渣活性炭对亚甲基蓝的吸附性能研究  

Adsorption Performance of Cinnamomum longipaniculatum Activated Carbon toward Methylene blue

作　　者：阳亿元 周鹏 王永强 梁祝[1,2] YANG Yiyuan;ZHOU Peng;WANG Yongqiang;LIANG Zhu(Department of Quality Management and Inspection Testing,Yibin University,Yibin 644000,China;Key Lab of Aromatic Plant Resources Exploitation and Utilization in Sichuan Higher Education,Yibin 644000,China)

机构地区：[1]宜宾学院质量管理与检验检测学部,四川宜宾644000 [2]香料植物资源开发与利用四川省高校重点实验室,四川宜宾644007

出　　处：《云南化工》2025年第4期43-47,共5页Yunnan Chemical Technology

基　　金：香料植物资源开发与利用四川省高校重点实验室开放基金项目(21XLY01);四川省省级大创项目(S202110641087);四川省省级大创项目(S202310641088)。

摘　　要：以油樟叶渣活性炭为吸附剂,研究了活性炭投加量、温度、时间、pH值和亚甲基蓝初始浓度对水中亚甲基蓝吸附性能的影响,采用傅里叶红外光谱分析和比表面仪对活性炭进行表征。结果表明,当活性炭投加量达到400 mg/L时,去除率达到99.6%;吸附时间5 h之前,亚甲基蓝的去除率快速提高到接近60%,之后吸附效果逐渐放缓,到20 h后水中亚甲基蓝基本去除;45℃时水中亚甲基蓝的去除率和吸附容量达到最高;pH值在2~8之间时,吸附性能随pH升高而增强,pH值超过10后,吸附容量降低。吸附动力学符合二级动力学模式,表明吸附速度主要由化学吸附决定;Langmuir和Freundlich较好地拟合了吸附等温线,表明为多分子层非均相吸附。By using activated carbon from Cinnamomum longipaniculatum leaf residue to adsorb methylene blue in water,the effects of the dosage of activated carbon,adsorption time,temperature and pH on the adsorption performance were studied.Fourier transform infrared spectroscopy analysis(FTIR)and specific surface area analyzer(BET)were used to characterize the activated carbon.The results showed that adsorption performance was improved with increase in the amount of activated carbon,andthen tended to stabilize at a dosage of 400 mgwith a removal rate of 99.6%.Adsorption performance increased with adsorption time,and methylene blue was basically 100% removed after 20 h.The highest removal rate and adsorption capacity were acquired at 45℃.The adsorption performance rose with increased pH within the range of 2-8,and then dropped after pH=10.The adsorption kinetics followed a second-order kinetic model,indicating that the adsorption rate was mainly determined by chemical adsorption,and Langmuir and Freundlich fitted the adsorption isotherm well,showing that the adsorption was multi molecular layer non-uniform phase adsorption.

关 键 词：油樟叶渣 活性炭 亚甲基蓝 吸附 

分 类 号：TQ424[化学工程] X703[环境科学与工程—环境工程]